<template>
	<view class="sort-nav flex bg-white">
		<view :class="'tag flex-2 flex row-center ' + (comprehensive ? 'primary' : '')" @tap="onNormal">综合</view>
		<view class="tag flex-2 flex row-center" @tap="onPriceSort">
			<text :class="value.priceSort ? 'primary' : ''">价格</text>
			<view class="arrow-icon flex-col col-center row-center">
				<u-icon name="arrow-up-fill" :color="value.priceSort == 'asc' ? colorConfig.primary : colorConfig.normal"></u-icon>
				<u-icon name="arrow-down-fill" :color="value.priceSort == 'desc' ? colorConfig.primary : colorConfig.normal"></u-icon>
			</view>
		</view>
		<view class="tag flex-2 flex row-center" @tap="onSaleSort">
			<text :class="value.saleSort ? 'primary' : ''">销量</text>
			<view class="arrow-icon flex-col col-center row-center">
				<u-icon name="arrow-up-fill" :color="value.saleSort == 'asc' ? colorConfig.primary : colorConfig.normal"></u-icon>
				<u-icon name="arrow-down-fill" :color="value.saleSort == 'desc' ? colorConfig.primary : colorConfig.normal"></u-icon>
			</view>
		</view>
		<view v-if="showType" class="tag flex-1 flex row-center" @tap="changeType">
			<image class="icon-sm"
				:src="value.goodsType === 'one' ? '/static/images/icon_double.png' : '/static/images/icon_one.png'">
			</image>
		</view>
	</view>
</template>

<script>
	import {trottle} from '@/utils/tools'
	export default {
		name: "sort-nav",
		props: {
			value: {
				type: Object,
				default: () => ({
					priceSort: '',
					saleSort: '',
					goodsType: 'one'
				})
			},
			showType: {
				type: Boolean,
				default: true
			}
		},
		data() {
			return {

			};
		},
		created() {
			this.onNormal = trottle(this.onNormal, 500, this);
			this.onPriceSort = trottle(this.onPriceSort, 500, this);
			this.onSaleSort = trottle(this.onSaleSort, 500, this);
		},
		computed: {
			comprehensive() {
				const {
					priceSort,
					saleSort
				} = this.value
				if (priceSort == '' && saleSort == '') {
					return true;
				}
				return false;
			}
		},
		methods: {
			onNormal() {
				this.value.priceSort = ''
				this.value.saleSort = ''
				const obj = {
					priceSort: '',
					saleSort: ''
				}
				this.onInput(obj)
			},
			onInput(obj) {
				this.$emit('input', Object.assign(this.value, obj))
			},
			onPriceSort() {
				let {
					priceSort
				} = this.value
				const obj = {}
				obj.priceSort = priceSort == 'asc' ? 'desc' : 'asc'
				obj.saleSort = ''
				this.onInput(obj)
			},
			
			onSaleSort() {
				let {
					saleSort
				} = this.value
				const obj = {}
				obj.saleSort = saleSort == 'asc' ? 'desc' : 'asc'
				obj.priceSort = ''
				this.onInput(obj)
			},
			changeType() {
				const {goodsType} = this.value
				const obj = {}
				obj.goodsType = goodsType === 'one' ? 'double' : 'one'
				this.onInput(obj)
			}
		}
	}
</script>

<style lang="scss" scoped>
.sort-nav {
	height: 80rpx;
	.tag {
		height: 100%;
	}
	.arrow-icon {
		transform: scale(0.36);
	}
}
</style>
